Triple
T1572227
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Quaternary period |
E33564
|
entity |
| Predicate | baseDefinedBy |
P30702
|
FINISHED |
| Object |
Gauss–Matuyama geomagnetic reversal
The Gauss–Matuyama geomagnetic reversal was a major event in Earth's history when the planet's magnetic field flipped polarity around 2.6 million years ago, marking a key boundary used in geological time scales.
|
E179503
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Gauss–Matuyama geomagnetic reversal | Statement: [Quaternary period, baseDefinedBy, Gauss–Matuyama geomagnetic reversal]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Gauss–Matuyama geomagnetic reversal Context triple: [Quaternary period, baseDefinedBy, Gauss–Matuyama geomagnetic reversal]
-
A.
An Inquiry into the Original State and Formation of the Earth
*An Inquiry into the Original State and Formation of the Earth* is an 18th-century geological treatise by John Whitehurst that explores the Earth's structure, history, and the processes that shaped it.
-
B.
On the Imperfection of the Geological Record
"On the Imperfection of the Geological Record" is a chapter in Charles Darwin's *On the Origin of Species* that addresses why the fossil record is incomplete and how this affects evidence for evolutionary change.
-
C.
Magnetes
Magnetes were an ancient Greek tribe from the region of Magnesia in Thessaly, known from myth and history as participants in wider Hellenic religious and political affairs.
-
D.
Theory of the Earth
Theory of the Earth is James Hutton’s foundational geological work that introduced the concept of deep geological time and laid the groundwork for modern geology.
-
E.
Gauss’s remarkable theorem
Gauss’s remarkable theorem is a fundamental result in differential geometry showing that the Gaussian curvature of a surface is an intrinsic property independent of how the surface is embedded in space.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Gauss–Matuyama geomagnetic reversal Triple: [Quaternary period, baseDefinedBy, Gauss–Matuyama geomagnetic reversal]
Generated description
The Gauss–Matuyama geomagnetic reversal was a major event in Earth's history when the planet's magnetic field flipped polarity around 2.6 million years ago, marking a key boundary used in geological time scales.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Gauss–Matuyama geomagnetic reversal Target entity description: The Gauss–Matuyama geomagnetic reversal was a major event in Earth's history when the planet's magnetic field flipped polarity around 2.6 million years ago, marking a key boundary used in geological time scales.
-
A.
An Inquiry into the Original State and Formation of the Earth
*An Inquiry into the Original State and Formation of the Earth* is an 18th-century geological treatise by John Whitehurst that explores the Earth's structure, history, and the processes that shaped it.
-
B.
On the Imperfection of the Geological Record
"On the Imperfection of the Geological Record" is a chapter in Charles Darwin's *On the Origin of Species* that addresses why the fossil record is incomplete and how this affects evidence for evolutionary change.
-
C.
Magnetes
Magnetes were an ancient Greek tribe from the region of Magnesia in Thessaly, known from myth and history as participants in wider Hellenic religious and political affairs.
-
D.
Theory of the Earth
Theory of the Earth is James Hutton’s foundational geological work that introduced the concept of deep geological time and laid the groundwork for modern geology.
-
E.
Gauss’s remarkable theorem
Gauss’s remarkable theorem is a fundamental result in differential geometry showing that the Gaussian curvature of a surface is an intrinsic property independent of how the surface is embedded in space.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69a885f11b048190935025a035302715 |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69aa61ddc9908190a4afca1c24400817 |
completed | March 6, 2026, 5:10 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad4028bc5881909dbe847229dd63bb |
completed | March 8, 2026, 9:23 a.m. |
| NEDg | Description generation | batch_69ad41930d208190b34531e3f35fa58b |
completed | March 8, 2026, 9:29 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ad422752348190b42ebc3781a6e8a5 |
completed | March 8, 2026, 9:32 a.m. |
Created at: March 4, 2026, 7:27 p.m.